[horde] Inline HTML claimed on mail with clean text/plain

Mon Aug 17 16:22:57 UTC 2015

Zitat von Ben Green <ben at bristolwireless.net>:

> Hi all,
>
> an odd issue has arisen with an email sent from Thuderbird. From  
> what I can tell Thunderbird is doing the right thing, and IMP is  
> responding unusually.
>
> I've copied in the portent bits of two mails ion below. They are  
> identical except that the signature on the first mail is a link, on  
> the second mail it contains an embedded image.
>
> Both present a valid, HTML free text/plain section. For the first  
> mail I can see the content perfectly. For the second mail I get:  
> "This message part contains HTML data, but inline HTML display is  
> disabled."
>
> This does not appear correct, the mail contains a valid text/plain  
> section with no HTML, which in the case of the first mail is  
> displayed as per my preferences.
>
> Any idea what's going on here? Surely the plain/text section should  
> be display, and an image reference in the text/html section  
> shouldn't be relevant.
>
> Cheers,
> Ben
>
> ===================================================================
> First Mail:
>
>
>
> To: beng at 3ca.org.uk
> Subject: test
> Content-Type: multipart/alternative;
>  boundary="------------060301000607060101080603"
>
> This is a multi-part message in MIME format.
> --------------060301000607060101080603
> Content-Type: text/plain; charset=utf-8; format=flowed
> Content-Transfer-Encoding: 7bit
>
>
> -- 
> Test Link <http://horde.org>
>
> --------------060301000607060101080603
> Content-Type: text/html; charset=utf-8
> Content-Transfer-Encoding: 7bit
>
> <html>
>   <head>
>
>     <meta http-equiv="content-type" content="text/html; charset=utf-8">
>   </head>
>   <body bgcolor="#FFFFFF" text="#000000">
>     <br>
>     <div class="moz-signature">-- <br>
>       <a href="http://horde.org">Test Link</a></div>
>   </body>
> </html>
>
> --------------060301000607060101080603--
>
>
>
> ===================================================================
> Second Mail:
>
> To: beng at 3ca.org.uk
> Subject: test
> Content-Type: multipart/alternative;
>  boundary="------------040203040304020409050405"
>
> This is a multi-part message in MIME format.
> --------------040203040304020409050405
> Content-Type: text/plain; charset=utf-8; format=flowed
> Content-Transfer-Encoding: 7bit
>
>
> -- 
>
> --------------040203040304020409050405
> Content-Type: multipart/related;
>  boundary="------------010007000200010706020808"
>
>
> --------------010007000200010706020808
> Content-Type: text/html; charset=utf-8
> Content-Transfer-Encoding: 7bit
>
> <html>
>   <head>
>
>     <meta http-equiv="content-type" content="text/html; charset=utf-8">
>   </head>
>   <body bgcolor="#FFFFFF" text="#000000">
>     <br>
>     <div class="moz-signature">-- <br>
>       <img src="cid:part1.03010404.01020304 at 3ca.org.uk"></div>
>   </body>
> </html>
>
> --------------010007000200010706020808
> Content-Type: image/png;
>  name="k45f0YAh_normal.png"
> Content-Transfer-Encoding: base64
> Content-ID: <part1.03010404.01020304 at 3ca.org.uk>
> Content-Disposition: inline;
>  filename="k45f0YAh_normal.png"
>
> iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAI9klEQVRoBdXB63NcdR3A4c/3
> d3ZPNiS7yeaQbE4LDTRNI02JgKIyImIpF2GqIiDjG8EyLcECIiDq9ML2AlNaaaHcSkEUZHzD
> RcdByJEZQRTbhjYpSC9pUy4J0NILuTV7P7+vblBHx3+g+zwSeL5SwSTwfKWCSeD5SgWTwPOV
> CiaB5ysVTALPVyqYBJ6vVDAJPF+pYBJ4vlLBJPB8pYJJ4PlKBZPA85UKJoHnKxVMAs9Xjneq
> IML/UZDA85VKIAIiTFIFVcok8HzlOKaqlKkqWAsiiAhiDKqKBJ6vHM+MIcxkaLr065y8YD6R
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> pYJJ4PlKBfsHy1YG4z8FPV0AAAAASUVORK5CYIIgICAgICAgICAgICAgICAgICAgICAgICAg
> ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg
> --------------010007000200010706020808--
>
> --------------040203040304020409050405--
>
> -- 
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> Frequently Asked Questions: http://horde.org/faq/
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Please create a bug report with complete message sources.

-- 
Jan Schneider
The Horde Project
http://www.horde.org/